package com.ny.demo;

public class BankPay implements Pay {
    double m=100;
    @Override
    public void pay(double money){
        if (m <money){
            System.out.println("你的余额不足");
        }
        else{
            System.out.println("你消费了"+money);
            m=m-money;
            System.out.println("你的余额为"+m);
        }
    }
}

